This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: TPA3245
Hi TI experts,
My customer asked if it is possible to output 80W on PVDD 24V at load 8ohm. I think it is impossible to calculate.
Using the formula below, it need at least 25.3V for 80W.
P=VI=V*V/R, 80W = V*V*8ohm -> V=25.3V
In case of PVDD 24V, is there a way to output power over 80W? (Speaker Load 8ohm)
When considering how much output power can be delivered at a specific PVDD, we usually use sine wave to do the calculation.
The relationship is, without voltage clipping, the max output power = Vrms^2/R = PVDD^2/2/R; where R is the loading resistance. The "/2" divider comes from the RMS level = 1/sqrt(2) * peak level.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Sam(MPAA) Zhang:
So, your answer is that 80W output is not possible?
In reply to Downey Kim:
The answer is when you are using 24V PVDD and 8R loading, you can't achieve 80W without voltage clipping,
To achieve 80W, you can increase the PVDD or using lower resistance loading.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.